Unveiling contextual realities by microscopically entangling a neutron

J. Shen; S. J. Kuhn; Robert M. Dalgliesh; V. O. de Haan; N. Geerits; A. A.M. Irfan; S. R. Parnell; Jeroen Plomp; A. A. van Well; null More Authors

doi:10.1038/s41467-020-14741-y

Unveiling contextual realities by microscopically entangling a neutron

J. Shen, S. J. Kuhn, Robert M. Dalgliesh, V. O. de Haan, N. Geerits, A. A.M. Irfan, S. R. Parnell, Jeroen Plomp, A. A. van Well, More Authors

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Abstract

The development of qualitatively new measurement capabilities is often a prerequisite for critical scientific and technological advances. Here we introduce an unconventional quantum probe, an entangled neutron beam, where individual neutrons can be entangled in spin, trajectory and energy. The spatial separation of trajectories from nanometers to microns and energy differences from peV to neV will enable investigations of microscopic magnetic correlations in systems with strongly entangled phases, such as those believed to emerge in unconventional superconductors. We develop an interferometer to prove entanglement of these distinguishable properties of the neutron beam by observing clear violations of both Clauser-Horne-Shimony-Holt and Mermin contextuality inequalities in the same experimental setup. Our work opens a pathway to a future of entangled neutron scattering in matter.

Original language	English
Article number	930
Number of pages	6
Journal	Nature Communications
Volume	11
Issue number	1
DOIs	https://doi.org/10.1038/s41467-020-14741-y
Publication status	Published - 2020

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title = "Unveiling contextual realities by microscopically entangling a neutron",

abstract = "The development of qualitatively new measurement capabilities is often a prerequisite for critical scientific and technological advances. Here we introduce an unconventional quantum probe, an entangled neutron beam, where individual neutrons can be entangled in spin, trajectory and energy. The spatial separation of trajectories from nanometers to microns and energy differences from peV to neV will enable investigations of microscopic magnetic correlations in systems with strongly entangled phases, such as those believed to emerge in unconventional superconductors. We develop an interferometer to prove entanglement of these distinguishable properties of the neutron beam by observing clear violations of both Clauser-Horne-Shimony-Holt and Mermin contextuality inequalities in the same experimental setup. Our work opens a pathway to a future of entangled neutron scattering in matter.",

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AU - Shen, J.

AU - Kuhn, S. J.

AU - Dalgliesh, Robert M.

AU - de Haan, V. O.

AU - Geerits, N.

AU - Irfan, A. A.M.

AU - Parnell, S. R.

AU - Plomp, Jeroen

AU - van Well, A. A.

AU - More Authors, null

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AB - The development of qualitatively new measurement capabilities is often a prerequisite for critical scientific and technological advances. Here we introduce an unconventional quantum probe, an entangled neutron beam, where individual neutrons can be entangled in spin, trajectory and energy. The spatial separation of trajectories from nanometers to microns and energy differences from peV to neV will enable investigations of microscopic magnetic correlations in systems with strongly entangled phases, such as those believed to emerge in unconventional superconductors. We develop an interferometer to prove entanglement of these distinguishable properties of the neutron beam by observing clear violations of both Clauser-Horne-Shimony-Holt and Mermin contextuality inequalities in the same experimental setup. Our work opens a pathway to a future of entangled neutron scattering in matter.

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Unveiling contextual realities by microscopically entangling a neutron

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